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C. ZIPERNOWSKY. ALTERNATING-CURRENT MACHINE.

No. 413,008. Patented Oct. 15. 1889.

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(No Model.) 3 Sheets-Sheet 2. 0. ZIPERNOWSKY.

ALTERNATING CURRENT MACHINE.

No. 413,008. Patented Oct. 15, 1889.

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G. ZIPERNOWSKY.

ALTERNATING CURRENT MACHINE.

No. 413,008. Patented Oct. 15, 1889.

AISL @Z/ UNITED STATES PATENT OFFIC CHARLES ZIPERNOVVSKY, OF BUDA-PESTH, AUSTRIA-HUNGARY.

ALTERNATlNG-CURRENT MACHINE.

SPECIFICATION forming part of Letters Patent No. 413,008, dated October 15, 1889.

Application filed April 19, 1889. Serial No- 307,663. (No model.) Patented in England December 27, 1887, No. 17,812; in France January 17, 1888, No. 188,187; in Italy March 22, 1888, No. 22,861; in Austria-Hungary June 7, 1888, No. 15,663 and No. 62,908; in Belgium July 13, 1888, No. 82,563, and in Spain July 26,1888,No.8,507-

To all whom it may concern.-

Be it known that 1, CHARLES ZIPERNOWSKY, a subject of the King of Hungary, and a resident of Buda-Pesth, Austria Hungary, have invented Improvements in Alternating-Ourrent Machines, (for which patents have been obtained in Great Britain, No. 17,812, dated December 27, 1887; in Austria-Hungary, Nos. 15,633 and 62,908, dated June 7, 1888; in France, No. 188,187, dated January 17, 1888; in Belgium, No. 82,563, dated July 13, 1888; in Spain, No. 8,507, dated July 26, 1888; in Italy, No. 22,861, dated March 22, 1888,) of which the following is a specification.

This invention consists of improvements in the construction of alternating-current electric generators, in which the electro-motive force is developed by the relative motion of the field-magnets and induction-bobbins.

The object of these improvements is to so construct such machines that their manufacture, fitting up, and taking apart shall be facilitated, and that the efficiency and ventilation of the machines shall be increased.

In the accompanying drawings, Figure 1 is a side elevation, partly in section. Fig. 2 is an end elevation, with the field-magnet wheel in section, and the upper half of the frame and induction-bobbins in section on the line 1 2, Fig. 1, and with some of the inductionbobbins removed from the lower half of the frame. Fig. 3 is a detached view of one of the plates from which the field-magnet core is built up, and Fig. 4 is a detached view of one of the plates from which the inductionbobbin cores are built. Fig. 5 shows in side view and edge view one of the side pressplates for the core of an induction-bobbin. Fig. 6 shows in side view and section the corresponding central press-plate. Fig. 7 shows in side and edge view one .of the outside bobbin holders or clamps for the fieldmagnet, and Fig. 8 shows in side view and plan one of the central bobbin-holders for the field-magnets.

The machine as represented in Figs. '1 and 2 consists of two principal parts-via, the electro-magnet wheel and the armature. The former moves inside the latter, so that the magnetizing-current must be conducted to the field-magnets either by means of rings or a commutator, while the main current is taken off from fixed terminals.

The field-magnet wheel is constructed in the following manner: U-shaped soft-iron sheets or plates K, as represented in Fig. 3, are so arranged together as to form a star, to which is added a similar star, with an insulating layer between, but placed in such a way that the interstices between the sheets composing one star are covered by the sheets of the next star, or, in other words, so as to break joints, as shown in Fig. 1. In this way any desired number of iron laminae are put one upon another until there are sutficient to form the whole electro-magnet wheel. The pile so formed is then pressed together to form a compact whole by means of two strong disks S, two bosses N, and the necessary number of screws 0. The bobbins M are slipped onto the core K, and they are then secured and held down by means of the bobbin holders or clamps H and the screws 0', passing through the plates of the core and the holders H.

In order that the sheet-iron disks shall not spread out fan-like before being adjusted, they are pressed together beforehand by means of the rivets E. The whole electromagnet wheel is then mounted on a suitable shaft WV and put into the two bearings means of strong pressplates 8 S" and a the machine with their cores projecting inward the side press-plates S and the middle press-plate S are provided with projecting bolt-seats B, into which the supporting-screws R are screwed. With the aid of these screws each part of the armature is fastened to the cross-bars, which are firmly screwed with insulating layers U onto the above-mentioned side plates D. Each induction-bobbin with shown in Fig. 1, and are provided with airchannels for the ventilation of the core.

To disconnect a magnet-bobbin it is only necessary to remove one of the inductionbobbins, to turn the magnet-wheel round until the respective magnet comes opposite the opening which is thus made, and then only to remove its bobbin-holders H in order to strip the bobbin off the core.

The construction here described can also be applied to alternating-current machines ofother types. It is possible, therefore, for example, to have stationary electro-magnets and the armature rotating. Further, the armature can be inside and the electro-magnet outside, in which case again either the electro-magnets or the induction-bobbins can rotate.

WVhat I claim as my invention is 1. An alternating-current electric generator consisting of a fixed armature having inwardly-projecting armature cores and bobbins, and a field-magnet wheel rotating inside the said armature, having outwardly-projecting field-magnet cores and bobbins, the said armature and field-magnet cores being composed of a number of segmental iron laminae lying in the plane of rotation and pressed together with interposed layers of insulating material.

2. An armature-core for alternating current electric generators, formed of T-shaped iron laminae pressed together by strong pressplates and screw-bolts, the armature-bobbin being slipped over,the perpendicular limb of this T-shaped core and fixed by clamps screwed to the press-plates.

3. An armature for alternating-curren t electric generators, composed of T-shaped cores with bobbins arranged in acircle with inwardly-projeoting perpendicularlimbs and fixed to but insulated from the frame-work of the machine.

4. A field-magnet wheel for alternating-current electric generators, consisting of many layers of V-shaped iron laminae arranged in a circle with outwardly-projecting limbs, the interstices between the several laminae of one layer being covered by the laminm of the next, and of bobbins slipped over the out- -wardly-projecting limbs, the said laminae being pressed together by strong press-plates and screw-bolts, and the said bobbins being held by suitable clamps and screw-bolts.

In testimony whereof I have sign ed my name to this specification in the presence of two subscribing witnesses.

CHARLES ZIPERNOWSKY. Witnesses:

WILLIAM MARIAssY, SCHOEHLAFOINOZ. 

